NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 630
ONVOY, LLC 1
EXIANT COMMUNICATIONS LLC 1
BANDWIDTH.COM CLEC, LLC - IL 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-07-19 630-246-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BARTLETT IL
2005-07-19 630-246-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BARTLETT IL
2005-07-19 630-405-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 AURORA IL
2005-07-19 630-405-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 AURORA IL
2005-07-19 630-405-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 AURORA IL
2005-07-19 630-429-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 AURORA IL
2005-07-19 630-485-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ST CHARLES IL
2005-07-19 630-485-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ST CHARLES IL
2005-07-19 630-485-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ST CHARLES IL
2005-07-19 630-504-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BARTLETT IL
2005-07-19 630-806-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 AURORA IL
2005-07-14 630-386-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 W CHICAGO IL
2005-07-14 630-386-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 W CHICAGO IL
2005-07-14 630-386-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 W CHICAGO IL
2005-07-14 630-386-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 W CHICAGO IL
2005-07-12 630-230-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K HINSDALE IL
2005-07-12 630-345-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GENEVA IL
2005-07-12 630-345-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GENEVA IL
2005-07-12 630-345-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GENEVA IL
2005-07-12 630-348-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GLEN ELLYN IL
2005-07-12 630-348-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GLEN ELLYN IL
2005-07-12 630-735-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ITASCA IL
2005-07-12 630-735-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ITASCA IL
2005-07-12 630-735-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ITASCA IL
2005-07-12 630-735-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ITASCA IL
2005-07-12 630-857-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C NAPERVILLE IL
2005-07-11 630-229-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2005-07-08 630-206-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 W CHICAGO IL
2005-07-08 630-206-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 W CHICAGO IL
2005-07-08 630-206-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 W CHICAGO IL
2005-07-07 630-296-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 LEMONT IL
2005-07-07 630-903-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2005-07-07 630-903-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2005-07-07 630-903-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2005-07-06 630-344-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WHEATON IL
2005-07-01 630-600-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ELMHURST IL
2005-07-01 630-600-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ELMHURST IL
2005-06-29 630-335-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2005-06-29 630-335-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2005-06-29 630-335-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2005-06-29 630-335-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2005-06-29 630-335-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2005-06-29 630-335-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2005-06-29 630-390-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2005-06-29 630-598-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 DOWNERSGRV IL
2005-06-29 630-598-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 DOWNERSGRV IL
2005-06-29 630-598-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 DOWNERSGRV IL
2005-06-29 630-870-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 AURORA IL
2005-06-29 630-967-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2005-06-23 630-335-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.